package model;
import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;
import javax.sql.DataSource;
import java.io.PrintWriter;
import java.sql.*;
import java.util.logging.Logger;

/**
 * Created with IntelliJ IDEA
 * Description:
 * User: Administrator
 * Data: 2023 - 11 - 14
 * Time: 19:20
 */
public class DBUtil {
    private volatile static DataSource dataSource = null;
    private static DataSource getDataSource() {
        if(dataSource == null) {
            synchronized (DBUtil.class) {
                if(dataSource == null) {
                    dataSource = new MysqlDataSource();
                    ((MysqlDataSource)dataSource).setUrl("jdbc:mysql://127.0.0.1:3306/blog_system?characterEncoding=" +
                            "utf8&useSSL=false");
                    ((MysqlDataSource)dataSource).setUser("root");
                    ((MysqlDataSource)dataSource).setPassword("111111");
                }
            }
        }
        return dataSource;
    }

    public static Connection getConnect() throws SQLException {
        return getDataSource().getConnection();
    }

    public static void close(Connection connection, PreparedStatement statement, ResultSet resultSet) {
        if(resultSet != null) {
            try {
                resultSet.close();
            } catch (SQLException e) {
                throw new RuntimeException(e);
            }
        }
        if(statement != null) {
            try {
                statement.close();
            } catch (SQLException e) {
                throw new RuntimeException(e);
            }
        }
      if(connection != null) {
          try {
              connection.close();
          } catch (SQLException e) {
              throw new RuntimeException(e);
          }
      }
    }
}
